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enum | { G726_ENCODING_LINEAR = 0,
G726_ENCODING_ULAW,
G726_ENCODING_ALAW
} |
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enum | { G726_PACKING_NONE = 0,
G726_PACKING_LEFT = 1,
G726_PACKING_RIGHT = 2
} |
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◆ g726_state_t
◆ g726_decode()
int g726_decode |
( |
g726_state_t * |
s, |
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int16_t |
amp[], |
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const uint8_t |
g726_data[], |
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int |
g726_bytes |
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) |
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Decode a buffer of G.726 ADPCM data to linear PCM, a-law or u-law.
- Parameters
-
s | The G.726 context. |
amp | The audio sample buffer. |
g726_data | |
g726_bytes | |
- Returns
- The number of samples returned.
◆ g726_encode()
int g726_encode |
( |
g726_state_t * |
s, |
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uint8_t |
g726_data[], |
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const int16_t |
amp[], |
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int |
len |
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) |
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Encode a buffer of linear PCM data to G.726 ADPCM.
- Parameters
-
s | The G.726 context. |
g726_data | The G.726 data produced. |
amp | The audio sample buffer. |
len | The number of samples in the buffer. |
- Returns
- The number of bytes of G.726 data produced.
◆ g726_free()
Free a G.726 encode or decode context.
- Parameters
-
- Returns
- 0 for OK.
◆ g726_init()
Initialise a G.726 encode or decode context.
- Parameters
-
s | The G.726 context. |
bit_rate | The required bit rate for the ADPCM data. The valid rates are 16000, 24000, 32000 and 40000. |
ext_coding | The coding used outside G.726. |
packing | One of the G.726_PACKING_xxx options. |
- Returns
- A pointer to the G.726 context, or NULL for error.
◆ g726_release()
Release a G.726 encode or decode context.
- Parameters
-
- Returns
- 0 for OK.